Best (Formerly Stanley) BB855B-5 x 6-USP Full Surface Heavy Weight Concealed Bearing Prison Hinge 5" x 6" Furnished With Fasteners, Door Weighing Up To 800 Lbs, Based On a 36" x 84" Door, Using [3] Hinges, See Manuf Cut Sheet, USP Prime Coat Gray

This Best BB855G-USP 5" x 6" Concealed Ball Bearing Detention Prison Hinge is designed for heavy weight doors up to 800 lbs, providing secure and durable support. With its full surface concealed bearings, it allows for smooth and quiet operation. This hinge is primed for easy painting and can come furnished with holes for easy installation.

• For lead-lined doors to x-ray rooms and other exceptionally heavy doors
• Made of double-weight steel capable of carrying doors weighing up to 800 lbs. (363 Kg) (Based on a 3' x 7' door with 3 hinges)
• Each of the 2 concealed hardened steel races contains sixteen 1/8" (3.2mm) hardened and ground steel balls which are assembled within a jacket
• Concealed bearings are well lubricated ensuring smooth, long-lasting operation
• Rolled knuckles are welded and machined
• Typically made not swaged, no holes (application A) for full surface applications, or for full mortise (applications C) applications. All other configurations are made to order